| 摘要 |
PURPOSE:To enable an MR head to improve reproduction efficiency sufficiently even when shorter recording wavelength by forming a stepped part when forming an auxiliary magnetic pole. CONSTITUTION:A thin film of MR element 22 is formed by sputtering a substrate 20. In this case, spatter rate is set beforehand to make the film thickness t as desired. Then, a stepped part 21 is formed by removing by etching at a distance equal to the width w of the MR element 22 from an end 29 of the substrate 20, and then, an insulating film 23 several hundreds Angstrom in thickness is stuck by high frequency sputtering on the surface of the substrate including the surface of the MR element and side wall 21' of the stepped part 21. Then, a layer of auxiliary magnetic pole 24' is formed similarly with the MR element 22 on the insulating film 23 extending from a part corresponding to the MR element 22 to an auxiliary magnetic pole forming part. On the other hand, an auxiliary magnetic pole 24 on which proximate end 25 of the sixth MR element overlaps is formed by removing by etching the end part 24''. |
